Midterm

Question 1

Atom

Answer 1

The smallest part of an element that still has the properties of the element

Question 2

Matter

Answer 2

Anything that has mass

Question 3

Mass

Answer 3

The amount of matter in an object

Question 4

Nonmetal

Answer 4

Elements that do not conduct heat or electricity very well

Question 5

Electron

Answer 5

Move around the nucleus if an atom

Question 6

Atomic theory

Answer 6

The idea everything is made of small particles

Question 7

Semi metal

Answer 7

Elements that are sometimes like metal and sometimes like non metal

Question 8

Subatomic particles

Answer 8

Smaller than an atom made up of three types of particles protons, neutrons, and electrons

Question 9

Compound

Answer 9

Type it matter mate of two or more elements

Question 10

Element

Answer 10

Are are the ingredients that make up all the other substances

Question 11

Protons

Answer 11

Particle with a positive charge

Question 12

Nucleus

Answer 12

Center

Question 13

Molecules

Answer 13

The smallest particle of a compound that still has the properties of that compound

Question 14

Metal

Answer 14

Good conductors of electricity and heat

Question 15

Neutron

Answer 15

Cluster at the center of the atom

Question 16

Mixture

Answer 16

Different materials placed together, but each material keeps its own properties

Question 17

Observation

Answer 17

Something you find out about objects, events, or living things using your sense

Question 18

Volume

Answer 18

The amount of space an object take up

Question 19

Weight

Answer 19

T

Question 20

Data

Answer 20

Information from which a conclusion can be drawn or a prediction can be made

Question 21

Precision

Answer 21

The ability to consistently repeat a measurement

Question 22

Accuracy

Answer 22

Ability to make a measurement that is as close to the actual value as possible

Question 23

Temperature

Answer 23

A measure of fast the particles in an object are moving

Question 24

Median

Answer 24

The middle

Question 25

Mode

Answer 25

Value that occurs most often

Question 26

Range

Answer 26

Difference between largest and smallest

Question 27

Mean

Answer 27

The average, adding data together and then dividing by the number of data

Question 28

Graduated cylinder

Answer 28

Measure volume of liquid

Question 29

Spring scale

Answer 29

Measures force

Question 30

Safety rules

Answer 30

Tie hair back
Safety goggles
Never taste or smell any substance
Listen to teacher’s instruction, ask questions
Use chemicals carefully
Help keep plants and animals that use safe
Read activity carefully before you start
Handle sharp items and other equipment carefully

Question 31

Thermometer

Answer 31

Measure temperature

Question 32

Balance

Answer 32

Measure mass

Question 33

Meter stick

Answer 33

To measure length and distance

Question 34

Microscope

Answer 34

Makes objects appear much larger

Question 35

Control group

Answer 35

Is a standard against which change is measured. In an experiment group is the same as the control group except one factor has changed

Question 36

Scientific method

Answer 36

Organized ways to answer questions and solve problems. Also ways of discovering cause and effect

Question 37

Variable

Answer 37

Something that can change in a test. An independent variable is one you can control. A dependent variable changes when an independent variable changes. A simple investigation should test only one variable at a time.

Question 38

Experiment

Answer 38

The use of scientific methods to test a hypothesis

Question 39

Sampling

Answer 39

Scientists examine random individuals from a population

Question 40

Model

Answer 40

Objects or ideas that represent other things. They show how something is constructed or how it worked

Question 41

Procedure

Answer 41

Step-by-step instruction for completing a task

Question 42

Survey

Answer 42

Can be questionaries that are given to a number a people whose answer are recorded and then analyzed. Sometimes people are interviewed in person or on phone

Question 43

Depended variable

Answer 43

When an independent variable changes

Question 44

Independent variable

Answer 44

One you can control

Question 45

Gram

Answer 45

a metric unit of mass equal to one thousandth of a kilogram.

Question 46

Kilogram

Answer 46

Equals 1000 gram

Question 47

Meter

Answer 47

the fundamental unit of length in the metric system, equal to 100 centimeters or approximately 39.37 inches.

Question 48

Centimeters

Answer 48

a metric unit of length, equal to one hundredth of a meter.

Question 49

Newton

Answer 49

X

Question 50

Atomic arrangement

Answer 50

the structure of an atom, theoretically consisting of a positively charged nucleus surrounded and neutralized by negatively charged electrons revolving in orbits at varying distances from the nucleus, the constitution of the nucleus and the arrangement of the electrons differing with various chemical elements.

Question 51

Chemical symbol

Answer 51

chemical symbol. noun. an abbreviation or short representation of a chemical element; the symbols in the periodic table. Natural elements all have chemical symbols of one or two letters; some manmade elements have three-letter symbols.

Question 52

Atomic number and atomic mass

Answer 52

The atomic number uniquely identifies a chemical element. In an uncharged atom, the atomic number is also equal to the number of electrons. The atomic number, Z, should not be confused with the mass number, A, which is the number of nucleons, the total number of protons and neutrons in the nucleus of an atom